Pump-shaft-centering device



2 SHEETS-SHEET 1 l Jan. 3U, 1923.

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-sHEET 2 AHF".

2 sHEETs C. F. ZIMANSKY. PUMP SHAFT CENTER|NG DEVICE.

Fl LED MAY 21 1921 Jan. 30, 1923,

CUR'I F. ZIMANSKY, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO Gr. W.PRICE PUMP AND ENGINE COMPANY, OF SAN FRANCISCO, CAlllfFOtN'lA.Y

PUMP-SHAFT-CENTERING DEVICE.

Application 1ed May 21, 1921. S'erial No. 471,460.

To all whom t may concern: Be it known that I, CURT F- ZIMANSKY,y acitizen of the United States, residing in the city and county of SanFrancisco, and State of California, have invented a new and usefulImprovement in a Pump-Shaft- Centering Device, of which the following isa specification.

My invention relates to improvements'in shaft centering devices for deepwell pumps of the rotary type wherein a bearing operates in conjunctionwith the discharge casing to center a pump shaft and casing there-1mechanism may be properly aligned and asv sembled.

The depth and consequent length of the.

casing under ordinary circumstances p ermits a whipping of the shaft andcasing therefor within the well due to the rotation of the shaft. Alsothe heat created'by rotation 'of the comparatively small diameteredshaft and shaft casing creates a difference in temperature between saidshaft and casing, owing partly lto its greater coefficient ofattenuation, and the larger diametered discharge casing, which latter iscooled by the water being discharged `therethrough, which difference intemperature causes an unequal expansion for which com pensation must bemade.

The object of the present invention is to provide an improved bearingarranged to not only center the shaft and Vshaft casing in the dischargecasing to prevent lateral movement of said shaft and casing but to 4alsopermit a longitudinal movement of one part to the other, suchlongitudinal movement being created or caused by such difference intemperature and other causes, such as uneven stresses and strains in theseveral parts;

accompli h this and other objects Aby means of e shaft. It is essential,owingl improved device diselesed ie.

the-drawings forming a part of the present speclcations wherein 'likecharacters are used to designate similar parts throughout the said'specifications and drawings, and in which:

Figs. 1 and 1a are broken vertical sectional views of a deep well pumpdisclosing the application of the improved device thereto; .f f Y- 4Fig. 2 is 'an enlarged broken view of a portion of a well in verticalsection disclos ing the device more in detail; and 1 Fig. 3 is atransverse sectional view taken on line 3-3 of Fig. 2 of the drawings inthe direction indicated.

"Referring tothe drawings the numeral l is used ,to designate a wellcasing within which is suspended a suitable pump 2 at the lower end of adischarge casing 3. The discharge casing 3 comprises sections con-l saidshaft 11 may be rotated to operate the pump 2 at the lower end thereof.

, A. discharge head 14 is mounted at the upper ends of the lwell anddischarge casings l and 3 respectively, and is provided with a dischargeoutlet 16.

The hub portion or bearing 9 of the s ider 8 is provided with annularshoulders 1 a rranged concentric with theV bore of sald bearing andarranged to r1g1dly engage the adjacent ends of the adjacent sectionsofa shaftcasing 18 to center saidcasing' and prevent lateral movementrelatlvely to the discharge-casing 3.

In operation he friction of the `s haft 11 in the bearings 9 of thespider 8 will tend to roduce heat an thereby cause expansion of theshaft 11 and the shaft casin' 18. It is also obvious that in pumps vofthis y e there is a longitudinal movement/ of t e shaft relativel to thedischarge casing durd tug the operas on and variation. of leeds ou atA-with a suitable pulley 12 by means of which the pump runners, notshown, which are secured to said shaft 11.

Furthermore, in assembling the various sections of the shaft, shaftcasing an'd discharge casing, there is bound to be a difference in thelength of the various sections which, when multiplied by the number ofsections employed, is bound to cause a longitudinal shifting of theshaft and casing therefor relatively to the discharge casing.

As the spider 8 slidably engages the shaft 1l and the discharge casing 3it is evident that longitudinal movement of any one of the several partsrelatively to the others may be readily accomplished by 'my improveddevice Without causing undue stresses and.

strains in some of the parts, at the same time centering said Severalparts and preventing lateral movement thereof, relatively to each other.y

Having thus described my invention, what l claim as new and desire tosecure by Letters Patent is:

l. The combination with a pump shaft and casin therefor and a dischargecasing, of a bearing rotatably engaging the shaft and rigidly engagingthe shaft casing and slidably engaging the discharge casing to permitlongitudinal movement of said shaft casing relatively to the dischargecasing.

2. The combination with a discharge` casing and a pump shaft and pumpshaft casing mounted therein, of an annulus slidably mounted within saiddischarge casing and having a bearing formed integral therewith andarranged to rotatably engage the shaft and rigidly engage the shaftcasing to center said shaft and to permit longitudinal movement of saidshaft casing relatively to the discharge casing.

3. The combination with .a discharge casing and a pump shaft andpumpshaft casing mounted therein, of a bearing arranged to rotatablyengage the shaft to center the same Within said discharge casingandhaving concentric shoulders formed on each end of said bearing torigidly engage and center the shaft casing, said bearing being slidablymounted within the discharge casing to permit longitudinal movement ofsaid bearings and-shaft casing relatively to the discharge casing.

4. The combination with a discharge casingarranged in sections and apumpshaft and pump shaft casing mounted therein, of flanges connectingthe sections in spaced relation to form annular channels between thevends of said sections; and a spiderl slidably mounted within eachannular channel and rotatably engaging the shaft and rigidly engagingthe shaft casing to permit longi-l tudinal movement thereof relativelyto the discharge casing.

5. The combination with a discharge casing of a well, arranged insections anda -pump shaft and shaft casing mounted therein, of flangesconnecting said sections in spaced relation to form annular channelsbetween the ends of said sections; bearing slidably mounted within saidchannels and arranged to center the pump shaft and casing thereforwithin said discharge casing and to permit longitudinal movement of saidshaft and shaft casing within said discharge casing.

6. The combination with a discharge casing of a well arranged insections and a pump shaft and shaft casing also in sections, of flangesconnecting said discharge casing sections in spaced relation; and abearing mounted between the ends of the shaft casing sections androtatably engaging the shaft and slidably engaging said flanges topermit longitudinal movement of the pump shaft and sections of the shaftcasing-'relatively to the discharge casing.

ln witness whereof l hereunto set my signature.

criar aiMANsav.

